High severityGHSA Advisory· Published Jun 10, 2026· Updated Jun 11, 2026
CVE-2026-46689
CVE-2026-46689
Description
Kanidm is an identity management platform. Prior to version 1.9.3, a single unauthenticated GET to any /scim/v1/... endpoint with a ?filter= query string of a few thousand nested parentheses (≈ 4–12 KB) drives the recursive-descent PEG parser past the worker thread's stack guard page. Rust responds to stack overflow with std::process::abort() — the entire kanidmd process exits. The parse runs inside axum's Query extractor, before any handler body and therefore before any ACL check. This issue has been patched in version 1.9.3.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
scim_protocrates.io | < 1.9.3 | 1.9.3 |
kanidm_protocrates.io | < 1.9.3 | 1.9.3 |
Affected products
1Patches
Vulnerability mechanics
References
3News mentions
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